1798
1798 is the year Edward Jenner published his work on smallpox vaccination.
- Even
- Composite
Where 1798 fits
Why 1798 is special
He tested the idea by deliberately infecting a child with cowpox and then exposing him to smallpox, which no ethics framework would now permit. The method worked and led to the only eradication of a human disease.
Factors & digit properties
- Divisors (8)
- 1, 2, 29, 31, 58, 62, 899, 1798
- Prime factorisation
- 2 × 29 × 31
- Digit sum
- 25
- Digital root
- 7
Representations
- Decimal
- 1798
- Binary
- 11100000110
- Octal
- 3406
- Hexadecimal
- 706
- Roman numeral
- MDCCXCVIII
- Scientific notation
- 1.798 × 10^3
Other mathematical patterns
- Deficient number
Related numbers & connections
The Rosetta Stone was found in 1799 during the French expedition to Egypt, a year after Jenner published his vaccination work in England.
View 1799 →Science
Jenner's 1798 publication described deliberately infecting an eight-year-old with cowpox and then exposing him to smallpox. The reasoning was sound, the result was correct, and the experiment would be prohibited outright today — all three are true simultaneously.
DocumentedScienceGeography: EnglandPeriod: 1798
Common questions
Is 1798 a prime number?
No, 1798 is not prime.
What are the factors of 1798?
The factors of 1798 are 1, 2, 29, 31, 58, 62, 899, 1798.
What is 1798 in Roman numerals?
1798 in Roman numerals is MDCCXCVIII.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 3 August 2026